ArticleJournal of the American Chemical Society2025
Conjugated Bisphosphonic Acid Self-Assembled Monolayers for Efficient and Stable Inverted Perovskite Solar Cells.
Article in Journal of the American Chemical Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Molecularly Templated Buried Interfaces for Inverted Perovskite Solar Cells.Angewandte Chemie (International ed. in English) · 2026Article
- Designing Efficient Inverted Perovskite Solar Cells with Self-Assembled Monolayer Hole Transport Layers.Nano-micro letters · 2026Review
- Hydroxyl Interfacial Engineering for Self-Assemble Monolayers Anchoring on NiOAdvanced materials (Deerfield Beach, Fla.) · 2026Article
- Ionic self-assembled monolayers enable neutral interfaces and synergistic charge extraction in high-efficiency perovskite solar cells.Nature communications · 2026Article
- Alkyne-Based Dual-Function Self-Assembled Monolayers for Efficient and Stable p-i-n Perovskite Solar Cells.Angewandte Chemie (International ed. in English) · 2026Article
- Redox-Mediated Stabilization of the Hole Transport Layer and Buried Interface Toward Stable Perovskite Solar Cells.Angewandte Chemie (International ed. in English) · 2026Article
- Enabling Highly Efficient and Stable Perovskite Photovoltaics via A Multidentate Molecular Anchor Additive.Nano-micro letters · 2026Article
- Self-Assembled Monolayers in Inverted Perovskite Solar Cells: A Rising Star with Challenges.Nano-micro letters · 2026Review
- Tuning the performances of perovskite solar cells using effective organic molecular hole-transporting materials: a review.Frontiers in chemistry · 2025Review
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Authors and funding
16 authors.
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Abstract
Chemically modifiable self-assembled monolayer (SAM)-based hole transport layers are crucial for achieving high-efficiency inverted perovskite solar cells (PSCs). However, designing molecular structures that simultaneously ensure strong binding affinity, interfacial stability, and optimized energy level alignment remains challenging. Here, we introduce TPA2P ((2-(4-(diphenylamino)phenyl)-1-phosphonovinyl)phosphonic acid), a novel SAM material featuring a conjugated bisphosphonic acid anchoring group. This dual phosphonic acid configuration enhances substrate binding on indium tin oxide (ITO), improves SAM uniformity, and increases interfacial stability. Furthermore, the ethylene bridge facilitates efficient intramolecular charge transfer (ICT) from the electron-donating triphenylamine unit to the electron-accepting bisphosphonic acid group. This ICT induces significant charge redistribution in TPA2P, resulting in a deep HOMO level at -5.47 eV. This optimized energy alignment reduces interfacial energy losses and significantly enhances hole extraction efficiency. As a result, TPA2P-based inverted PSCs achieve a high power conversion efficiency of 26.11%, an exceptional fill factor of 85.03%, and outstanding operational stability under continuous illumination. These findings provide an effective molecular design strategy for advancing high-performance and stable perovskite photovoltaics.
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